low power circularly polarized fm antenna

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100A Series Low Power Circularly Polarized FM Antenna

The 100A Series antenna is the latest development in ERI’s famous ROTOTILLER® style FM antenna. The 100A Series antenna is designed for non-pressurized, translator and low power FM applications. This antenna is also available in half wave length bay to bay configurations which will limit RFI problems by reducing downward and upward radiation.

Mounting brackets and attachment hardware suitable for round members up to 4” diameter are included. Stand-off pole mounting brackets and antenna input jumper cables are also available.

CharacteristicsProduct Line: 100

Product Series: 100A Series

Frequency Range: 88 - 108 MHz, Single frequency

Polarization: Circular (Clockwise)

Azimuth: ±2 dB in free space, horizontal

VSWR at Input: 1.5:1 ± 2 MHz

FeaturesFM Translator and low power FM •applicationsCircular polarization•Light weight and low wind load •designEconomically priced•


100A Series Low Power Circularly Polarized FM Antenna

Electrical and Mechanical Specifications

Type Number

Power Gain dB Gain Input

Input Feed

Config.

Input Power Rating

Bay to Bay

Spacing

WeightWind Area (CaAa)

Normal Exposure Transverse ExposureNo Ice 1/2” Ice No Ice 1/2” Ice No Ice 1/2” Ice

kW Wave lbm kg lbm kg ft2 m2 ft2 m2 ft2 m2 ft2 m2100A-1M 0.42 -3.768 7-16 DIN Male Branch 1.0 Full 20.0 9.1 45.0 20.4 1.40 0.13 3.00 0.28 3.10 0.29 5.30 0.49

100A-2F 0.90 -0.458 7-16 DIN Female Branch 2.0 Full 45.0 20.4 100.0 45.4 3.50 0.33 7.10 0.66 7.10 0.66 11.50 1.07

100A-4F 1.92 2.833 7-16 DIN Female Branch 2.0 Full 100.0 45.4 225.0 102.1 8.70 0.81 17.30 1.61 15.80 1.47 26.20 2.43

100A-2F-HW 0.63 -2.007 7-16 DIN Female Branch 2.0 Half 45.0 20.4 100.0 45.4 3.50 0.33 7.10 0.66 7.10 0.66 11.50 1.07

100A-4F-HW 1.18 0.704 7-16 DIN Female Branch 2.0 Half 100.0 45.4 225.0 102.1 8.70 0.81 17.30 1.61 15.80 1.47 26.20 2.43Notes: (1) Rated at 2000 feet elevation(2)Includes mounting brackets and attachment hardware for up to 4-inch in diameter tower leg or pole.(3) Antenna weight and wind load are approximate values for a typical structure assuming no top load. Final design loads will vary for specific projects and should be verified by an ERI representative. (4) Wind loads are calculated in accordance with the ANSI/TIA/EIA 222-F standard. Weight and effective wind area (CaAc) includes antenna, inner transmission feed and typical support mast and mounting brackets with no ice.

100A Model

Ordering Information

Mounting NotesPrice includes mounting brackets and attachment hardware for up to 4-inch in diameter tower leg or pole.

Type Number Definition100A - b c - d

100A ERI 100A Series low power FM antenna

b Number of Bays

c Input: M = Male, F = Female

d Design Note: Blank = Full wave length bay to bay spacing, HW = Half wave length bay to bay spacing


Around the World, Across the Spectrum,Your Single Source For Broadcast Solutions

About Electronics Research, Inc.Founded in 1943, Electronics Research, Inc. delivers high quality, innovative, integrated solutions to broadcasters across the U.S. and around the world. Our dedicated staff of engineers, designers, fabricators, and project managers take pride in contributing to your success by providing AM, FM, VHF, UHF, BRS-EBS, and Mobile Media broadcast systems including the industry’s best antenna, transmission line, filter/combiner, and tower and structural support systems. In addition to manufacturing the full range of broadcast system components and installation accessories, ERI offers a suite of engineering and field services needed to plan, install, optimize, and maintain your broadcast facility. We are your single source for broadcast solutions.

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Electronics Research, Inc.7777 Gardner RoadChandler, Indiana 47610-9219USA

877 ERI-LINE (toll-free: North America)www.eriinc.com (web)+1 812 925-6000 (international)+1 812 925-4030 (fax)

All designs, specifications, and availabilities of products and services presented in this publication are subject to change without notice.

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low power circularly polarized fm antenna

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